Fitbit Inspire 3 Health and Fitness Tracker
- 10 days battery life, 2 hour charge
- 50 meters water resistance
- Heart rate, stress, sleep and blood oxygen tracking
- 0.76 inch display, 400 nit brightness
- iOS 16.4 or Android 11.0 or higher needed
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A small, minimalist fitness tracker with heart rate, stress, sleep and blood oxygen tracking and a stated water resistance depth. GPS comes from the phone, and the screen is very small.
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ASIN: B0B5F9SZW7Model: Inspire 3Category: Fitness Trackers
Overview
A pair of optical sensors and a small digital screen do the work in this Fitbit tracker, which pairs with a phone over Bluetooth. It has a silicone band with a tang buckle and a resin case in black and midnight zen.
Choose it for a compact, light band that covers the main health metrics with a long battery. The limit is the very small screen and the dependence on the phone for GPS.
Who it's for
Everyday step counting, sleep and stress checks and gym workouts are the main uses. Runners who want phone-free route tracking should pick a watch with its own GPS.
Pros and cons
- Compact minimalist band
- Heart rate and blood oxygen
- Stress and sleep tracking
- Long battery life
- GPS relies on the phone
- Very small screen
- Needs a recent phone OS
Performance notes
Optical sensors on the back of the case read heart rate and blood oxygen, and fit against the wrist affects accuracy. Phone GPS is used for routes, so the phone must come along for outdoor workouts.
Specifications
| Brand | Fitbit |
|---|---|
| Model | Inspire 3 |
| Dimensions & fit | |
| Water Resistance Depth | 50 meters |
| Screen size | 0.76 inches |
| Band Length | 39.32 Millimeters |
| Item Dimensions | 0.71 x 0.43 x 1.54 inches |
| Capacity & performance | |
| Memory Storage Capacity | 32 MBlower than 80% of 26 fitness trackers |
| Age Range Description | Adult |
| Battery Capacity | 0.3lower than 96% of 28 fitness trackers |
| Power & efficiency | |
| Battery Average Life | 10 days |
| Battery Charge Time | 2 hours |
| Battery Cell Type | Lithium Ion |
| Construction & materials | |
| Case Material Type | Resin |
| Band Material Type | Silicone |
| Color | Black/Midnight Zen |
| Compatibility & installation | |
| Compatible Phone Models | Apple iOS 16.4 or higher and Android OS 11.0 or higher |
| Connectivity Technology | Bluetooth |
| Compatible Devices | IOS and Android |
| Human Interface Input | Touchscreen |
| Included components | |
| Unit Count | 1.0 Count |
| Warranty & support | |
| Warranty Description | 1 year manufacturer |
| Warranty Type | Limited |
| Other details | |
| Display Type | Digital |
| Additional Features | Heart Rate Monitor |
| BuiltIn Media | Tracker, Band |
| Clasp Type | Tang Buckle |
| GPS Geotagging Functionality | GPS Via Smartphone |
| Maximum Display Brightness | 400 Nit |
| Metrics Measured | Heart Rate, Sleep Duration, Stress, Blood Oxygen Monitor |
| Shape | Rectangular |
| Sport Type | Fitness |
| Style Name | Minimalist |
| Target Audience | Tweens, Parents, College Students |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP68 |
| Wearable Computer Type | Activity Tracker |
| Wireless Provider | Unlocked |
Closest rivals on specs
Milavan TK20 Smart Ring 2.0- Memory Storage Capacity 0.03 vs 0 GB (+3100%)
- Battery Capacity 0.3 vs 15 mAh (-98%)
- Battery Average Life 10 vs 3 days (+233%)
Milavan R11M Smart Health Ring- Battery Capacity 0.3 vs 20 mAh (-98%)
- Battery Average Life 10 vs 3 days (+233%)
- Battery Charge Time 2 vs 1 hours (+100%)
Bakoor AMOLED Fitness Tracker Watch- Battery Capacity 0.3 vs 160 mAh (-100%)
Frequently asked questions
How big is the Fitbit Inspire?
The listing gives 0.71 x 0.43 x 1.54 inches for the tracker and a band length of 39.32 millimeters.
Does the Fitbit Inspire have its own GPS?
No. The listing says GPS via smartphone.
What phones work with the Fitbit Inspire?
Apple iOS 16.4 or higher and Android OS 11.0 or higher.